Hardened and blued steel tools easily remove 223 and 308 cases which have the case head broken off from over firing or out of spec brass. Most AR-15 or M1A shooters experience this problem from time to time, and these extractors get the case out of the rifle easily. Brownells threaded, two-piece design is adjustable for length so the tool completely engages the rim of the case mouth without slipping through or stripping out. Just close the bolt on the extractor rim of the tool and extract the bolt to remove the broken case. Two models cover all .223 Remington / 5.56 NATO or 308 Winchester / 7.62 NATO cases